EP3626129A1 - Connection element for furniture rods - Google Patents

Abstract

The invention relates to a connecting element (10) for the mechanical connection of two intersecting furniture rods (3, 4) of a piece of furniture (for example an armchair) with a connecting cord for passage through a transverse bore (18, 19) in each of the furniture rods (3, 4) 4), so that the connecting cord runs through the two transverse bores (18, 19). The invention additionally comprises a closed loop (16, 17) at the two ends of the connecting cord and a button (14, 15) for threading into the two loops (16, 17) of the connecting cord, the buttons (14, 15) are larger than the cross bores (18, 19) in the furniture rods (3, 4) and thus prevent the connecting cord (13) from slipping through the cross bores (18, 19) in the furniture rods (3, 4) when threaded.

Description

The invention relates to a connecting element for the mechanical connection of intersecting furniture rods of a piece of furniture (e.g. an armchair). The invention further comprises a piece of furniture (e.g. an armchair) with such connecting elements.

Wooden chairs are known from the prior art which are composed of a plurality of furniture rods, the furniture rods being held together by connecting cords which are passed through transverse bores in the furniture rods. The connecting cords are then knotted at their ends. However, the connection of the furniture rods is not yet satisfactory.

The general technical background of the invention should also be pointed out DE 20 2013 003 781 U , DE 44 06 334 A1 , DE 17 99 864 U and EP 0 252 170 A1 . These documents partially disclose connecting elements according to the preamble of claim 1, but these known arrangements are not yet completely satisfactory.

The object of the invention is therefore to create a correspondingly improved connecting element.

This object is achieved by an inventive connecting element according to the main claim.

The connecting element according to the invention initially comprises, in accordance with the prior art, a connecting cord which is passed through transverse bores in the furniture bars to be connected to one another.

The connecting element according to the invention additionally provides that the connecting cord has a closed loop at its ends. A button can be threaded into each of these loops, which, when threaded, prevents the connecting cord from slipping through the cross holes. The button thus virtually replaces the knotting in the known furniture described at the beginning with a connecting cord.

In a preferred embodiment of the invention, the buttons are each essentially disc-shaped and each have two mutually opposite cutouts for threading into the loops of the connecting cord.

The buttons are each essentially in the form of a circular disk, the recesses then preferably being in the form of a circular sector.

For example, the circular sector-shaped recesses in the buttons can extend in the circumferential direction of the circular disk-shaped buttons over an angle which is in the range of 5 ° -90 °, 10 ° -70 °, 20 ° -50 ° or 25 ° -40 °.

During assembly, the circular disk-shaped buttons with their cylindrical outer surface can be placed on the surface of one of the furniture rods, the loop being threaded into the cutouts in the button. The button can then be unrolled along its cylindrical surface until the button is fully threaded into the loop. The button then only has to be rotated about a transverse axis, so that the loop is then guided in the two opposite cutouts of the button. During this rolling movement when threading into the loop, a tension is also generated in the connecting cord, so that the furniture rods to be connected to one another are pulled together with a corresponding tension.

In the preferred exemplary embodiment of the invention, the cutouts each have a fillet at their inner end, the connecting cord lying in the fillet in the area of the loop in this fillet. These fillets preferably each have a diameter which is greater than the thickness of the connecting cord.

Here, there is also the possibility that the fillets each form a narrow point in the cutouts, in order to enable the button to be levered into the loop of the connecting cord when the connecting cord is being threaded.

In the preferred exemplary embodiment of the invention, the loops each have a specific loop width, the loop width preferably being greater than the distance between the opposite cutouts in the disk-shaped buttons. This is useful so that the button can be threaded into the loop. In addition, it is advantageous if the sum from the distance between the opposite recesses and the radial depth of the recesses in the button is smaller than the loop width. This is useful so that the button can simply roll on its cylindrical surface when threading into the loop.

In the preferred embodiment, the connecting cord is made of plastic (e.g. polyamide) and is essentially rigid with no substantial elasticity in the longitudinal direction. However, it is alternatively also possible for the connecting cord to be elastic in the longitudinal direction in order to produce a tension force between the furniture rods connected to one another.

The two buttons of the connecting element, however, are preferably made of plastic, such as a thermoplastic (e.g. POM: polyoxymethylene). Alternatively, the buttons can also be made of metal or metal alloys (e.g. brass).

The furniture rods, on the other hand, are preferably made of wood (e.g. ash, spruce, beech) and preferably have a round (e.g. circular, oval) cross section. However, it is alternatively also possible for the cross section of the furniture rods to be angular.

It should also be mentioned that the furniture rods connected to one another are preferably pivotable relative to one another in the connected state.

It should also be mentioned that the invention not only claims protection for the connecting element described above. Rather, the invention also claims protection for a complete piece of furniture (e.g. seating furniture, children's furniture, shelf, etc.) with several furniture rods and several connecting elements for connecting the furniture rods in pairs.

In a preferred exemplary embodiment of the invention, the furniture rods form a frame, a seat cover being suspended in the frame. The furniture then preferably consists only of the furniture rods, the seat cover and the connecting elements.

In the preferred embodiment of the invention, the frame has a number of crosses, each consisting of two pieces of furniture, which are connected to one another in the middle by a connecting element to form a cross. The frame preferably consists of a cross on the back and on the front and a cross on the two opposite sides. The back cross is then connected to the two crosses on the side, just like the front one Cross is connected to the two side crosses, each by connecting elements according to the invention, which each connect the furniture rods of the different crosses at the ends.

The seat cover can then be hung in the upper ends of the furniture rods of this frame. For example, the seat cover can be essentially rectangular and have pockets folded in at its opposite edges, the pockets being sewn to the side and hung on the upper ends of the furniture rods.

Figur 1

eine Perspektivansicht eines erfindungsgemäßen Sessels,

Figur 2

eine Perspektivansicht von zwei Möbelstäben des Sessels aus Figur 1, die durch ein erfindungsgemäßes Verbindungselement miteinander verbunden sind,

Figur 3

eine Perspektivansicht eines Knopfs des erfindungsgemäßen Verbindungselements, sowie

Figur 4

eine Verbindungsschnur des erfindungsgemäßen Verbindungselements.

Other advantageous developments of the invention are characterized in the subclaims or are explained in more detail below together with the description of the preferred exemplary embodiments of the invention with reference to the figures. Show it:

Figure 1

a perspective view of an armchair according to the invention,

Figure 2

a perspective view of two furniture rods of the armchair Figure 1 which are connected to one another by a connecting element according to the invention,

Figure 3

a perspective view of a button of the connecting element according to the invention, and

Figure 4

a connecting cord of the connecting element according to the invention.

Figure 1 shows an embodiment of an armchair according to the invention, which consists of a total of eight furniture rods 1-8, a seat cover 9 and twelve connecting elements, the Figures 2-4 illustrate the structure and operation of such a connecting element 10.

The two furniture bars 1, 2 are connected to one another in the middle by a connecting element 10 to form a front cross.

The two furniture bars 3, 4 are connected in the same way to one another in the center by a connecting element 10 to form a rear cross.

Furniture rods 5, 6, on the other hand, form a cross on the left side of the armchair, while furniture rods 7, 8 form a cross on the right side. In addition, the furniture bars 1-8 each connected to each other in pairs at the rod ends by a connecting element 10, so that they are connected in Figure 1 form the frame shown.

The seat cover 9 is essentially rectangular and has a sewn-on pocket 11, 12 on its front edge and on its rear edge, the pockets 11, 12 being suspended on the rod ends, so that the seat cover 9 is removed from the frame by the furniture rods 1- 8 is held.

The structure and the mode of operation of the connecting element 10 will now be described below, it being mentioned that all the connecting elements in the armchair are constructed identically.

The connecting element essentially consists of a connecting cord 13 and two buttons 14, 15, the two buttons each being able to be threaded into a closed loop 16, 17 at the ends of the connecting cord 13.

During assembly, one of the two buttons 14, 15 is first threaded into the associated loop 16, 17 of the connecting cord 13. The connecting cord 13 is then passed through transverse bores 18, 19 in the furniture rods 13, 14 to be connected to one another, so that the other loop 16 or 17 is exposed. Then the other button 14 is then threaded into the exposed loop, so that the connecting cord 13 then connects the two furniture bars 3, 4 to one another.

The perspective view in Figure 3 shows the button 14, all buttons are identical. From the perspective view it can be seen that the button 14 is essentially in the form of a circular disk and has two recesses 20, 21 in the shape of a sector lying opposite one another, each of which extends over an angle α ≅ 20 °.

At their radially inner end, the two circular sector-shaped recesses 20, 21 each open into a fillet 22, 23 with a diameter d, the diameter d of the fillets 22, 23 being greater than the thickness of the connecting cord 13.

Between the two recesses 20, 21 there is a distance a in the head which is greater than the loop width w of the loops 16, 17 in the ends of the connecting cord 13. This is important so that the button 14 in the loops 16, 17 of the Connecting cord 13 can be threaded.

To thread the button 14 with its cylindrical outer surface 24 is placed on the surface of the furniture rod 3 when the empty loop 16 protrudes from the transverse bore 19. The loop is then threaded into the cutout 20 of the button 14 until the loop 16 rests in the fillet 20.

The button is then rolled off on its cylindrical outer surface 14, the connecting cord 13 being tensioned.

Then the loop 16 is then also threaded into the fillet 23 on the opposite side of the button 14, whereupon the button 14 can then be rotated in order to complete the connection process.

The invention is not restricted to the preferred exemplary embodiments described above. Rather, a large number of variants and modifications are possible which also make use of the inventive idea and therefore fall within the scope of protection. In particular, the invention also claims protection for the subject and the features of the subclaims independently of the claims referred to in each case and in particular also without the features of the main claim. The invention thus comprises various aspects of the invention, which enjoy protection independently of one another.

Reference symbol list:

1-8

Furniture rods

9

Seat cover

10th

Fastener

11, 12

Pockets of the seat cover

13

Connecting cord

14, 15

Fastener buttons

16, 17

Loops in the ends of the connecting cord

18, 19

Cross holes in the furniture bars

20, 21

Cutouts in the button

22, 23

Rounding the cutouts

24th

Outer surface of the button

a

Distance between the cutouts

t

Radial depth of the recesses

d

Rounding diameter

α

Extent of the recesses

w

Loop width of the loops of the connecting cord

Claims (11)

Connecting element (10) for the mechanical connection of two intersecting furniture rods (1-8) of a piece of furniture, in particular an armchair, with a) a connecting cord (13) for passage through a respective transverse bore (18, 19) in the furniture rods (1-8) to be connected to one another, so that the connecting cord (13) runs through the two transverse bores (18, 19),
marked by b) a closed loop (16, 17) at the two ends of the connecting cord (13), and c) in each case a button (14, 15) for threading into the two loops (16, 17) of the connecting cord (13), the buttons (14, 15) being larger than the transverse bores (18, 19) in the furniture rods (1 -8) and thus in the threaded state prevent the connecting cord (13) from sliding through the transverse bores (18, 19) in the furniture rods (1-8). Connecting element (10) according to claim 1, characterized in a) that the buttons (14, 15) are each essentially disc-shaped, and b) that the buttons (14, 15) for threading into the loops (16, 17) of the connecting cord (13) each have two mutually opposite recesses (20, 21). Connecting element (10) according to claim 2, characterized in a) that the buttons (14, 15) are each substantially circular disk-shaped, and b) that the cutouts (20, 21) in the buttons (14, 15) are each essentially circular sector-shaped. Connecting element (10) according to claim 2, characterized in that the circular sector-shaped recesses (20, 21) in the buttons (14, 15) each extend over an angle (α) which is in the range of 5 ° -90 °, 10 ° -70 °, 20 ° -50 ° or 25 ° -40 °. Connecting element (10) according to one of claims 2 to 4, characterized in that a) that the recesses (20, 21) each end in a fillet at their inner end, the fillets (22, 23) each having a diameter (d) which is greater than the thickness of the connecting cord (13), and /or b) that the fillets (22, 23) each form a constriction in the recesses (20, 21) in order to pry the button (14, 15) into the loop (16, 17) of the connecting cord when threading the connecting cord (13) (13) to enable. Connecting element (10) according to one of claims 2 to 5, characterized in that a) that the loops (16, 17) each have a specific loop width (w), b) that between the opposite recesses (20, 21) in the disc-shaped buttons (14, 15) there is a distance (a) which is smaller than the loop width (w), and / or c) that the sum of the distance (a) between the opposite recesses (20, 21) and the radial depth (t) of the recesses (20, 21) is smaller than the loop width (w). Connecting element (10) according to one of the preceding claims,
characterized, a) that the connecting cord (13) consists of plastic, in particular polyamide, and / or b) that the connecting cord (13) is essentially rigid without substantial elasticity in the longitudinal direction, and / or c) that the two buttons (14, 15) consist of plastic, in particular of a thermoplastic, in particular of polyoxymethylene, and / or d) that the furniture rods (1-8) consist of wood, in particular of ash, and / or e) that the furniture rods (1-8) each have a round cross section, in particular a circular cross section, and / or f) that the interconnected furniture rods (1-8) can be pivoted relative to one another in the connected state. Furniture, in particular seating, in particular armchairs, children's furniture or shelves a) a plurality of furniture rods (1-8), the furniture rods (1-8) preferably being non-curved, and b) a plurality of connecting elements (10) according to one of the preceding claims, wherein the connecting elements (10) mechanically connect the furniture rods (1-8) in pairs. Furniture according to claim 8, characterized in a) that the furniture rods (1-8) form a frame, and b) that a seat cover (9) is suspended in the frame. Furniture according to claim 9, characterized in a) that the frame on the back has a first cross of two furniture rods (3, 4), the two furniture rods (3, 4) of the first cross being connected to one another in the center by a connecting element (10) according to one of claims 1 to 7 , b) that the frame has a second cross of two furniture rods (1, 2) on the front, the two furniture rods (1, 2) of the second cross being connected to one another in the center by a connecting element (10) according to one of Claims 1 to 7 , c) that the frame laterally has a third cross consisting of two furniture rods (5, 6), the two furniture rods (5, 6) of the third cross being connected to one another in the center by a connecting element (10) according to one of Claims 1 to 7, d) that the frame has a fourth cross made of two furniture bars (7, 8) laterally opposite the third cross, the two furniture bars (7, 8) of the fourth cross being centered by a connecting element (10) according to one of claims 1 to 7 are connected, e) that the rear first cross is connected to the two lateral crosses by connecting elements (10) according to one of claims 1 to 7 at the ends of the furniture rods (1-8), and f) that the front second cross is connected to the two lateral crosses by connecting elements (10) according to one of claims 1 to 7 at the ends of the furniture rods (1-8). Furniture according to claim 10, characterized in a) that the seat cover (9) is hooked into the upper ends of the furniture rods (1-8), and / or b) that the seat cover (9) is essentially rectangular and has pockets (11, 12) folded in at its opposite edges, the pockets (11, 12) being hung on the upper ends of the furniture rods (1-8).

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